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Finding the Fourth Proportional to 662.51, 993.92 and 223.75

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Solution

The fourth proportional to 662.51, 993.92 and 223.75 is: 335.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    662.51 : 993.92 = 223.75 : x
  2. Step 2: Convert to fraction form
    662.51/993.92 = 223.75/x
  3. Step 3: Cross multiply
    662.51x = 993.92 × 223.75
  4. Step 4: Simplify right side
    662.51x = 222,389.60
  5. Step 5: Solve for x
    x = 222,389.60/662.51
  6. Step 6: Final answer
    x = 335.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.